HsVoipSDK - Version 1.4 HsVoipSDK is an audio streaming / voice over IP SDK in C / C++. HsVoipSDK is shipped with full C source code and includes the following components: HsSound C source library: Audio library for Windows HsRtp C source library: RTP protocol library HsSock C source library: Socket interface library audio.c: Audio streaming / Voice over IP application for Windows (uses the above components)HsVoipSDK is designed for use from C/C++ applications on Windows platforms. The use of HsVoipSDK is royalty free. HsVoipSDK source code can be used to develop Voice over IP audio streaming or voice chat applications in C / C++.Features of Audio Library (HsSound): Detection of installed audio devices